CompressImg

JPG to PNG Converter

Convert JPEG to PNG instantly — free, lossless, 100% in your browser

Drop image here or click to upload

JPG, PNG, WebP, HEIC — max 20MB

You can also paste an image (Ctrl+V)

⚡ Converted in seconds·🔒 Images never leave your device·✓ Free, no sign-up

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Why Convert JPG to PNG?

JPG and PNG serve different purposes, and knowing when to switch formats can save significant time and quality. JPG uses lossy compression — ideal for photographs — but it does not support transparency and introduces compression artifacts that accumulate with each re-save. PNG uses lossless compression, preserving every pixel exactly and supporting full alpha channel transparency. Converting a JPG to PNG is the right choice when you need to add a transparent background, overlay the image on a colored surface, or edit and re-save the image multiple times without quality degradation.

Common use cases include: converting a product photo to PNG so it can be placed on a website with a non-white background, converting a logo from JPG to PNG to preserve transparency for branding materials, or converting a screenshot to PNG to maintain sharp text and crisp edges. PNG is also preferred for images that will be processed further — applying filters, resizing multiple times, or compositing with other layers — because lossless compression means no quality is lost between edits.

How to Convert JPG to PNG — 3 Simple Steps

  1. 1

    Upload your JPG file

    Click the upload area, drag and drop your JPG or JPEG file, or paste from clipboard (Ctrl+V). Files up to 20MB are accepted. Your image is processed entirely in your browser — nothing is sent to any server.

  2. 2

    Select PNG as the output format

    PNG is pre-selected as the output format on this page. The converter reads your JPG and re-encodes it as a lossless PNG. You can also switch to WebP in the format selector if you need an even smaller file with transparency support.

  3. 3

    Download your PNG file

    The converted PNG downloads directly to your device. The file is named with a "converted-" prefix and the .png extension for easy identification. Conversion is instant — no waiting for server processing.

Will Converting JPG to PNG Improve Quality?

Converting a JPG to PNG will not improve quality — but it will stop further quality loss. JPG compression artifacts that already exist in the original file are preserved exactly in the PNG output. PNG stores pixel data losslessly, so the artifacts are captured as-is rather than made worse. The benefit is that any subsequent editing or re-saving of the PNG file will not add new compression artifacts — unlike re-saving a JPG, which loses a small amount of quality each time.

For this reason, designers and photographers often convert working copies of images from JPG to PNG before editing. Once editing is complete, they export to JPG or WebP for the final output. This workflow preserves maximum quality throughout the editing process.

JPG → PNG: what changes

File size increases (PNG is lossless and larger for photos). No new artifacts added. Existing artifacts preserved exactly. Transparency is NOT added — JPG has no alpha channel data to carry over.

JPG → PNG: what stays the same

All pixel colors and brightness values are preserved exactly. Image dimensions are unchanged. The visual appearance at normal viewing distance is identical to the original JPG.

JPG vs PNG: Which Format Should You Use?

The choice between JPG and PNG depends on the image content and how it will be used:

Use JPG when:

  • Photograph with complex colors and gradients
  • File size is critical (email, web, social media)
  • No transparency needed
  • Final output, not a working file

Use PNG when:

  • Transparency or alpha channel required
  • Logo, icon, or graphic with sharp edges
  • Text or diagram that must stay crisp
  • Working/editing file that will be re-saved

For modern web use where you need transparency and small file sizes, consider converting to WebP instead — WebP supports transparency like PNG but produces files 25–35% smaller.

Why Is the PNG File Larger Than the Original JPG?

PNG files are almost always larger than equivalent JPG files for photographs — this is expected and normal. A JPG photograph achieves small file sizes by discarding image data that is difficult for the human eye to detect. PNG stores every pixel exactly as-is, making it inherently larger for complex photographic content. A 500KB JPG photo might become a 3–8MB PNG file after conversion. This trade-off is acceptable when transparency or lossless quality is required, but PNG is not the right format for purely photographic content where file size matters.

If you need a smaller file with transparency, use WebP — it supports alpha channel transparency while producing files significantly smaller than PNG. If you need a smaller file without transparency, use image compression to reduce the PNG file size after conversion.

Privacy — Your Images Never Leave Your Device

This JPG to PNG converter runs entirely in your browser using the HTML5 Canvas API. When you upload a JPG file, it is loaded into browser memory and converted locally — no data is ever sent to any server. Your images are never stored, analyzed, or shared. Close the browser tab and the image data is permanently gone.

For details on data handling, see our Privacy Policy and Terms of Service.

Frequently Asked Questions